Heavy Duty Equipment Technician Red Seal Exam Prep · Question
A technician is reassembling a planetary gear set. During the process, they confuse the sun gear with a planet gear. What immediate effect would this have if the assembly were installed into a transmission?
Sun gears and planet gears have different tooth counts, diameters, and mounting provisions within a planetary set. Incorrectly interchanging them would lead to
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Question: A technician is reassembling a planetary gear set. During the process, they confuse the sun gear with a planet gear. What immediate effect would this have if the assembly were installed into a transmission?
Answer options: ✅ The gear set would bind and seize upon initial rotation
- The transmission would operate with significantly reduced efficiency
- The gear set would make excessive noise but function
- The transmission fluid would overheat rapidly
Correct answer: The gear set would bind and seize upon initial rotation
Explanation: Sun gears and planet gears have different tooth counts, diameters, and mounting provisions within a planetary set. Incorrectly interchanging them would lead to incompatible meshing, causing immediate binding and seizing once torque is applied.
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